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H. R. RANDALL & 0.1. 1300mm.

'5. AUTOMATICAIZLY- REGULA'I'ING THETEMPERA- APPARATUS FD TUBE OFCARBURETE'RS.

' Patented Aug.1, 1876.

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N-PETERS. FHDTU-ILITHOGRAPHEE WASHINGTON. D. c.

U'Nnrn'n STATES PATENT OFFICE;

HENRY R. RANDALL AND OSCAR F. BOOMER, OF NEW YORK, N. Y.

IMPROVEMENT m APPARATUS FOR AUTOMATICALLY REGULATING THE TEMPERATURE OF H CARBURETERS.

Specification forming part of Letters Patent No. 180,638., dated August 1, 1876; application filed April 19, 1876.

' have invented certain new and useful Improvements in Apparatus for Automatically 4 Regulating the Temperature in Carburetors,

of which the. following is a specification:

This invention relates to certain new and useful improvements in apparatus for carbureting air'o'r gas, its object being to providefor automatically regulating and controlling the temperature of the hydrocarbon liquid in the carburetor at a proper and uniform standard throughout the entire operation of the apparatus, and thus prevent the supercarburation of the air or gas by the overheating of the hydrocarbon liquid or the deficient carburation of the same by the loss of heat caused by the rapid evaporation of said hydrocarbon liquid. This we accomplish by means of a body of Water surrounding the carburetor in a tank, or jacket, within which said carburetor is located, the water being discharged and renewed automatically as the temperature of the hydrocarbon is reduced by evaporation, by means ofa thermostat connected with suitable valves, so as to replenish the caloric as it is taken off, and maintain the temperature of the water in the tank, and through the medium of the water the temperature of the carbureter, at a constant and uniform standard. We provide for heating the water in the tank or 7 jacket, and thus raising the temperature in the carburetor, by means of certain chemicals, as more fully hereinafter set forth.

In the drawing, Figure 1 represents a vertical section through the tanathe thermostat, and the regulating-valves on the line as a; of Fig. A 2; and Fig. 2 a vertical section through the tank and regulating-valves.

The letter A represents a earbureter of any suitable construction, located within a cylindrical tank or jacket, 8. Q represents a thermostat, consisting of an annular or coiled tube, 0, located within the tank or jacket B, below the carbureter, and communicating with a chamber, 01, which is provided with a flexible diaphragm, e, on top, connected to the vertically-moving rod j, which is secured to a the carbureter set in operation.

lever, g, at its upper end. The lower end of said valve-rod works in a guide-recess, h,

formed in the bottom of the chamber (1, and

that-portion of said rod passing through the flexible diaphragm is screw-threaded, and provided with adjustable clampingnuts 70, by means of which the diaphragm is adjusted upon and fastened to the rod. The letter D represents a valve-chest, located within the tank B, in front of the chamber 01 of the thermostat. Upon the top of said valve-chamber, immediately over the valveseats, are located two vertical cylinders or chambers, E F, provided with suitable heads or tops l I, through which the valve-rods G H extend, said heads being perforated and provided with suitable stuffing-boxes for the purpose. To the lower ends of the valve-rods are secured the valves K L, which work vertically toward and away from the seats in the valve-chest D. The upper ends of the valve-rods are connected to the cross-head M, secured to the lever g of the thermostat. The letter'N represents a pipe leading from a hydrant or other water-supply to the cylinder E, and P an eduotion-pipe leading from the center of the valve-chest. The valve-chest is provided with a partition, R, located between the eductiou-pipe and that portion of said chest directly under the cylinder E, and with an aperture, S, leading from said portion directly into the water-tank, and

the cylinder F is provided with a-similar 'ap erture, T, leading into the tank.

The operation of our apparatus is as follows: The thermostat is to be filled, or partially filled, with a volatile substance, such as ether, which will readily expand and contract under slight changes of temperature, and the pipe N connected with any suitable water-supply. The tank B is then properly filled with water, and

As the hydrocarbon is evaporated and taken up by the air or gas the temperature is rapidly decreased by the caloric taken up in the volatilization of the hydrocarbon. This condenses the volatile fluid in the thermostat, contracting the volume of the same, and the atmospheric pressure forces the flexible diaphragm inward, depressing the rod f and lever g, opening the valves G and H. This allows the water from the hydrant or other water-supply toflow into the tank through the cylinder- E and T, the cylinder I and ednction-pipe P of the valve-chest. As the water enters the tank the temperature is gradually restored, and'whcn it reachesthe normal point or standard the volatile fluid in the thermostat expands and forces out the diaphragm, closing the valves, 1

and stopping the flow of Waten In connect-ion with the apparatus "as described, when it is desired to elevate the temperature of the water 'ahove' 'i't's normal condi='-- tion, we employ certain chemicals, which -p'os-- sess the property of combining with water, forming hydrates, such as sulphate of baryta or the oxide ofcalciuinfl'iltis wellk'no'w'n that such-substances; when] combining withwvatelgdevelo'p'a considerableamountofheat", and

this we utilize *for' "increasin the teln' per'ature orthe waten In using suchsubstanceswe-place {the same in the tank B""surroundi11g the fearburetel, Ema-as the heatis' det eloped it is taken-up bythe same and-transmitted"toi'the 'ydrocarbou', thus "p roviding' for its-more rapid I 'volatili'zation. i

11 W-hat- We claim, anddesireto' secureby' LettersPatent, is-

1 1. In combination with thecarbureter and the water ta-nk" surrounding the same, the thermostat 0, consisting of a coiled tube and chamber, d, containing any suitable volatile substance, the said chamber being provided with a flexible diaphragm, e, which operates the valves forautomaticallyadmitting the wa ter to the tank, and. discharging the same --therefrom. by the expansion and contraction of the volatile substance, asset forth.

' 2. In combination with the water-tank B in which the carbureter is located, a'thermo- I stat, (Leonnected with valves K, the valve box' D, andcyli-uders- E=Fg= with-their induction and eductiou apertures, and the pipe N leading from the water-supply, substantially as described. a

I In testimony 'tlrat wexclaim-theforegoing we "have i hereunto-set our ha n'ds in *the -presence *OfthesuDscribi'ng witnesses.

. 1 i'HENRY- R: RANDALL.

OSG'AR-FQBO'OMER.

J Fcsrsn -Bz GILBERT.

witnesses to BOOMER: 

